floor 57 100 floors
Tap the red button again until the hook move to the middle, then hit the door by the ball several times until it is broken and the door is open.
For floor 56 100 floors answer follow the hints below
1st row : W 4 W W
2nd row : 3 W W 5
3rd row : W 5 W W
4th row : 2 W 4 W
(Where W = the WhiteFlag, remember the minesweeper game? )
After this hint of floor 57 100 floors read also the next floor answer